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authorFUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>2008-09-19 12:23:30 -0400
committerIngo Molnar <mingo@elte.hu>2008-09-22 14:43:37 -0400
commitafa9fdc2f5f8e4d98f3e77bfa204412cbc181346 (patch)
tree8e6c390d8dc18734f6071d2ddd7a2bca01fe9000 /Documentation/kernel-parameters.txt
parented6dc4981368aa8ac89b0ea61535cfa2b03533cb (diff)
iommu: remove fullflush and nofullflush in IOMMU generic option
This patch against tip/x86/iommu virtually reverts 2842e5bf3115193f05dc9dac20f940e7abf44c1a. But just reverting the commit breaks AMD IOMMU so this patch also includes some fixes. The above commit adds new two options to x86 IOMMU generic kernel boot options, fullflush and nofullflush. But such change that affects all the IOMMUs needs more discussion (all IOMMU parties need the chance to discuss it): http://lkml.org/lkml/2008/9/19/106 Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp> Acked-by: Joerg Roedel <joerg.roedel@amd.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'Documentation/kernel-parameters.txt')
-rw-r--r--Documentation/kernel-parameters.txt9
1 files changed, 5 insertions, 4 deletions
diff --git a/Documentation/kernel-parameters.txt b/Documentation/kernel-parameters.txt
index 40066ceb48fe..040ce30632b5 100644
--- a/Documentation/kernel-parameters.txt
+++ b/Documentation/kernel-parameters.txt
@@ -284,6 +284,11 @@ and is between 256 and 4096 characters. It is defined in the file
284 isolate - enable device isolation (each device, as far 284 isolate - enable device isolation (each device, as far
285 as possible, will get its own protection 285 as possible, will get its own protection
286 domain) 286 domain)
287 fullflush - enable flushing of IO/TLB entries when
288 they are unmapped. Otherwise they are
289 flushed before they will be reused, which
290 is a lot of faster
291
287 amd_iommu_size= [HW,X86-64] 292 amd_iommu_size= [HW,X86-64]
288 Define the size of the aperture for the AMD IOMMU 293 Define the size of the aperture for the AMD IOMMU
289 driver. Possible values are: 294 driver. Possible values are:
@@ -893,10 +898,6 @@ and is between 256 and 4096 characters. It is defined in the file
893 nomerge 898 nomerge
894 forcesac 899 forcesac
895 soft 900 soft
896 fullflush
897 Flush IO/TLB at every deallocation
898 nofullflush
899 Flush IO/TLB only when addresses are reused (default)
900 901
901 902
902 intel_iommu= [DMAR] Intel IOMMU driver (DMAR) option 903 intel_iommu= [DMAR] Intel IOMMU driver (DMAR) option